Question

conducting a cell has a charge of + 10 at its surface charge of -20 is given at the centre of the shell what is the charge on the outer surface of the shell.

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Answer 1

Answer:

A spherical conducting shell of inner radius r1 and outer radius r2 has a charge ‘Q’. A charge ‘q’ is placed at the centre of the shell. (a) ... ok

Answer 2

The charge on the outer surface of the shell is -10 C .

Given :

Charge on the surface of conducting shell , $q_1=+10\ C$ .

Charge at the center of shell , $q_2=-20\ C$ .

We need to find the charge on the outer surface of the shell.

We know , in a conductor charge stays only in surface and its equal to the sum of net charge .

Therefore , he charge on the outer surface of the shell is Q :

$Q=q_1+q_2\\\\Q=10-20\ C\\\\Q=-10\ C$

Hence , this is the required solution .

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Electrostatics

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